[AUTO]:[Choose another of your rear-guards with "Silver Thorn" in its card name, and put it into your soul] When this unit is placed on (RC), if you have a «Pale Moon» vanguard, you may pay the cost. If you do, choose a card with "Silver Thorn" in its card name other than a card named "Silver Thorn Assistant, Zelma" from your soul, and call it to (RC).